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Finding the Fourth Proportional to 88,041.20, 131,859.30 and 72,294.80

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Solution

The fourth proportional to 88,041.20, 131,859.30 and 72,294.80 is: 108,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,041.20 : 131,859.30 = 72,294.80 : x
  2. Step 2: Convert to fraction form
    88,041.20/131,859.30 = 72,294.80/x
  3. Step 3: Cross multiply
    88,041.20x = 131,859.30 × 72,294.80
  4. Step 4: Simplify right side
    88,041.20x = 9,532,741,721.64
  5. Step 5: Solve for x
    x = 9,532,741,721.64/88,041.20
  6. Step 6: Final answer
    x = 108,275.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.